266365 has 16 divisors (see below), whose sum is σ = 362880. Its totient is φ = 185920.

The previous prime is 266359. The next prime is 266369. The reversal of 266365 is 563662.

It is not a de Polignac number, because 266365 - 2⁵ = 266333 is a prime.

266365 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1512 + ... + 1678.

It is an arithmetic number, because the mean of its divisors is an integer number (22680).

2²⁶⁶³⁶⁵ is an apocalyptic number.

It is an amenable number.

266365 is a deficient number, since it is larger than the sum of its proper divisors (96515).

266365 is a wasteful number, since it uses less digits than its factorization.

266365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212.

The product of its digits is 6480, while the sum is 28.

The square root of 266365 is about 516.1056093475. The cubic root of 266365 is about 64.3416784853.

The spelling of 266365 in words is "two hundred sixty-six thousand, three hundred sixty-five".